Ionic compounds form crystal structures. molecular structures. pure elements. neutral elements

He electron cloud is the predicted location for A) electrons only B) electrons and neutrons C) electrons and protons D) electrons and other gases

What is the action force and the reaction force you sit down on a chair

A street light is at the top of a 16 ft tall pole. A woman 6 ft tall walks away from the pole with a speed of 4 ft/sec along a straight path. How fast is the tip of her shadow moving along the ground when she is 50 ft from the base of the pole?

The position of an object is given by x = bt3 a. if x and t are meters and seconds respectively, what are the units of b? b. what is the instantaneous velocity at time t? c. find the average velocity from t = 0 to t = t

What is the vertical distance between low and high tides is?

What color of light can plants "see"?

Two tiny beads are 25 cm apart with no other charges or fields present. Bead A carries 10 µC of charge and bead B carries 1 µC. Which one of the following statements is true about the magnitudes of the electric forces on these beads

A ball is thrown straight up at 20 m. What is the balls velocity as it hits the ground?

Block 1 and Block 2 have the same mass, m, and are released from the top of two inclined planes of the same height making 30 degree and 60 degree angles with the horizontal direction, respectively.

Water waves change direction when they encounter water of different depths and begin to move at different wave speeds. This is called A. reflection B. constructive interference C. the Doppler effect D. refraction